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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_workers_runtimeservice_h__
#define mozilla_dom_workers_runtimeservice_h__
#include "mozilla/dom/WorkerCommon.h"
#include "nsIObserver.h"
#include "js/ContextOptions.h"
#include "MainThreadUtils.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/SafeRefPtr.h"
#include "mozilla/dom/workerinternals/JSSettings.h"
#include "mozilla/Atomics.h"
#include "mozilla/Mutex.h"
#include "mozilla/StaticPtr.h"
#include "nsClassHashtable.h"
#include "nsHashKeys.h"
#include "nsTArray.h"
class nsPIDOMWindowInner;
namespace mozilla::dom {
struct WorkerLoadInfo;
class WorkerThread;
namespace workerinternals {
class RuntimeService final : public nsIObserver {
struct WorkerDomainInfo {
nsCString mDomain;
nsTArray<WorkerPrivate*> mActiveWorkers;
nsTArray<WorkerPrivate*> mActiveServiceWorkers;
nsTArray<WorkerPrivate*> mQueuedWorkers;
uint32_t mChildWorkerCount;
WorkerDomainInfo() : mActiveWorkers(1), mChildWorkerCount(0) {}
uint32_t ActiveWorkerCount() const {
return mActiveWorkers.Length() + mChildWorkerCount;
}
uint32_t ActiveServiceWorkerCount() const {
return mActiveServiceWorkers.Length();
}
bool HasNoWorkers() const {
return ActiveWorkerCount() == 0 && ActiveServiceWorkerCount() == 0;
}
};
mozilla::Mutex mMutex;
// Protected by mMutex.
nsClassHashtable<nsCStringHashKey, WorkerDomainInfo> mDomainMap
MOZ_GUARDED_BY(mMutex);
// *Not* protected by mMutex.
nsClassHashtable<nsPtrHashKey<const nsPIDOMWindowInner>,
nsTArray<WorkerPrivate*> >
mWindowMap;
static StaticAutoPtr<workerinternals::JSSettings> sDefaultJSSettings;
public:
struct NavigatorProperties {
nsString mAppVersion;
nsString mAppVersionOverridden;
nsString mPlatform;
nsString mPlatformOverridden;
CopyableTArray<nsString> mLanguages;
};
private:
NavigatorProperties mNavigatorProperties;
// True when the observer service holds a reference to this object.
bool mObserved;
bool mShuttingDown;
bool mNavigatorPropertiesLoaded;
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
static RuntimeService* GetOrCreateService();
static RuntimeService* GetService();
bool RegisterWorker(WorkerPrivate& aWorkerPrivate);
void UnregisterWorker(WorkerPrivate& aWorkerPrivate);
void CancelWorkersForWindow(const nsPIDOMWindowInner& aWindow);
void FreezeWorkersForWindow(const nsPIDOMWindowInner& aWindow);
void ThawWorkersForWindow(const nsPIDOMWindowInner& aWindow);
void SuspendWorkersForWindow(const nsPIDOMWindowInner& aWindow);
void ResumeWorkersForWindow(const nsPIDOMWindowInner& aWindow);
void PropagateStorageAccessPermissionGranted(
const nsPIDOMWindowInner& aWindow);
const NavigatorProperties& GetNavigatorProperties() const {
return mNavigatorProperties;
}
static void GetDefaultJSSettings(workerinternals::JSSettings& aSettings) {
AssertIsOnMainThread();
aSettings = *sDefaultJSSettings;
}
static void SetDefaultContextOptions(
const JS::ContextOptions& aContextOptions) {
AssertIsOnMainThread();
sDefaultJSSettings->contextOptions = aContextOptions;
}
void UpdateAppVersionOverridePreference(const nsAString& aValue);
void UpdatePlatformOverridePreference(const nsAString& aValue);
void UpdateAllWorkerContextOptions();
void UpdateAllWorkerLanguages(const nsTArray<nsString>& aLanguages);
static void SetDefaultJSGCSettings(JSGCParamKey aKey,
Maybe<uint32_t> aValue) {
AssertIsOnMainThread();
sDefaultJSSettings->ApplyGCSetting(aKey, aValue);
}
void UpdateAllWorkerMemoryParameter(JSGCParamKey aKey,
Maybe<uint32_t> aValue);
#ifdef JS_GC_ZEAL
static void SetDefaultGCZeal(uint8_t aGCZeal, uint32_t aFrequency) {
AssertIsOnMainThread();
sDefaultJSSettings->gcZeal = aGCZeal;
sDefaultJSSettings->gcZealFrequency = aFrequency;
}
void UpdateAllWorkerGCZeal();
#endif
void SetLowMemoryStateAllWorkers(bool aState);
void GarbageCollectAllWorkers(bool aShrinking);
void CycleCollectAllWorkers();
void SendOfflineStatusChangeEventToAllWorkers(bool aIsOffline);
void MemoryPressureAllWorkers();
uint32_t ClampedHardwareConcurrency(bool aShouldResistFingerprinting) const;
void CrashIfHanging();
bool IsShuttingDown() const { return mShuttingDown; }
void DumpRunningWorkers();
private:
RuntimeService();
~RuntimeService();
nsresult Init();
void Shutdown();
void Cleanup();
void AddAllTopLevelWorkersToArray(nsTArray<WorkerPrivate*>& aWorkers)
MOZ_REQUIRES(mMutex);
nsTArray<WorkerPrivate*> GetWorkersForWindow(
const nsPIDOMWindowInner& aWindow) const;
bool ScheduleWorker(WorkerPrivate& aWorkerPrivate);
template <typename Func>
void BroadcastAllWorkers(const Func& aFunc);
};
} // namespace workerinternals
} // namespace mozilla::dom
#endif /* mozilla_dom_workers_runtimeservice_h__ */
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